Clay bar question?

Question

I have used my clay bar once and the instructions on the box says you can use it on up to 3 cars. But i used it a year ago and put it back into a plastic bag, will it still be good to use now on my car?

Answer 1

It should be. Try it on a hidden place and see how it performs.

Answer 2

the function of a clay bar is to scrub off non paint items such as chemicals from water and all those things you dont get off just by washing your car like the person above me said use it on a hidden spot on your car and if there is no damage done keep on going